Double earpiece



I H. G- PAPE DOUB EARPIBCE Filed Jan. 17. 1924 Patented Nov. 3, 1925.

umrirn: as.

PATENT orrrcename. mm, OF NEW YORK; N. Y.

DOUBLE EAR/PIECE! Application-filed January 11,1924. Serial nacsatci.

taint new and: usefullfliprovements in DoubleEarpieces, ofi-whichdhe-iollowing is a specification. V

The objects of thisinvention are to, facilitate the private reception, of; a speakers voice overan ordinary telephone or kindred \de'vicc with. realistic 'personifica-tions, even in a place of considenablemoisy surroundings. This laccomplish byshutting out, or excluding, surroundings sounds from the listeners ears; lettfhimwreceive the message with both ears, in-such c learand natural manner, under conditions of full possible mental concentration as tojnspire him with a thrill andgsense-of' aww-and all this without the; use of the-ordinarily uncomfortable and unsanitary sound-proof booth: bringingtothemental vision of the listeners, as far 'as sound is Concerned, only the voice of the speaker.

Other-objects of my invention are to enable one to receive the transmitted voice of a speaker, or other sounds, natures way or physiologically: without any undue pneumatic or car strain, and without the accompaniment of any undesirable bi-noises from the device itself.

Still another feature of this invention resides in it havin no interference with the free operation 0? the usual hand receiver switch hook or fork, because of a swivel joint, as illustrated and hereafter further defined.

Still another object of my invention resides in the ability of a user of this device to have one of its earpieces swing out of the way when it is desired to use one earpiece only.

The functions of my invention have long been felt wanting and will therefore present itself as one of class and distinction throughout and of exceptional value and usefulness.

The underlying principles of this invention, which in my drawing is presented for application to, or used with, a so-called standard telephone hand receiver of the electro-phonetic type employing a diaphragm,

is naturally applicable to a wide variety of receivers, such as for instance. the watchcase styles of receivers which. include auxiliary, watch case. receivers or corroborating receivers, switchboard operators receivers, radio receivers, ear-phones for deaf per sons, aviation phones, Stethoscopes, etc.,-; and

mostany. and all forms o'f acoustic tubular sound receivers includinghthosc of the house speaking tube sets, the limousine phones, trouble locating-and detecting sets, etc.

Similar reference numerals are employed to designate correspondingparts :in all figures of the drawing, showing one embodiment of this invention only.

Figure 1 is a perspective view of my invention in use by the user of a telephone hand receiver.

Figure 2 is a perspective view of the same with the receiver suspended from the usual telephone switch hook or fork.

Figure 3 is a sectional side view of my invention showing the main and auxiliary earpiece, part perspective and part sectional.

Figure 4: is an interior or underside view of the main earpiece.

Figure 5- is an enlarged sectional detail view of the tubular swivel joint employed, to which is fastened the sound conducting tube, that transmits the sounds from the main earpiece to the auxiliary earpiece.

In the drawing similar reference numerals designate corresponding parts. Thus, 1 is the main earpiece of my invention; 2 is the auxiliary earpiece; 3 is the sound con ducting tube between them; 4 the swivel tubular joint uniting the main earpiece with the sound conducting tube; 5 is the spring tension within the I sound conducting tube; (3 is the central inner sound chamber of the main earpiece; 7 its main conducting outlet, while 8 is its exterior sound amplifying chamber and car seat, and 9 is its auxiliary conducting outlet leading into the conducting tube, with final outlet at 10 of the auxiliary earpiece that is provided with pneumatic concussion release vents 11; 12 are swell chambers, from one to three of which are provided with minute air exhaust rents 13 that conduct into their exterior protecting groove or hollow 14.

The groove or hollow it prevents ready ventio'n' in its broadest aspect."

covering or 010 ging of the minute exhaust vents 13, whic would otherwise be too often the case with the use of a dusting1 or wipingZ-fclo tl} on the'earpieee -orgwhen t ese vents ai're'u'sed in the earpieces of watchcase receivers or head receivers, of a design similar to that as shown. for insta nce in 'spe'c'd'to certain particular forms of {my in vention, I' doino't desireftobe limited to such details, sinceman'ychan es and modifications may well-be made-without departing" froni the spirit and scope of my 1n- Having thus described my invention, I

1'.'A"double earpiece of the*=class=-described, comprisinga main earpiece *for fit-- tinglover'or to a persons ear, an auxiliary earpiece carried bysaid main earpiece, said ea" ieces being cooperatively-united by a sprmged tubular conductor,'said main ear-- piece having an interior'soiind concentrating'ehamber, a sound swell chamber adjoining the saine, a compression release vent of minute size entering into said swell chamber, and a. protective-groove or hollow located onthe outside of'said 'main earpiece for saidcompression'i'elease ven 2. A double earpiece of the class described, comprised of a main and an auxili ry earpiece, said earpieces being united b a springed tubular conductor, a minute pressure exhaust or vent for each of said earpicees, a main conducting bore for each earpiece with which the pressure exhaust of each coacts, and a protective means located on the exterior of one of said earpieces for the protection of its-exhaust or vent.

An earpiece of the class described having an interior sound chamber of convex formation, said sound chamber being provided with a series of-soimd swell chambers, said sound swell chambers being provided with a minute compression release or rent, said release or vent opening into a protective groove or hollow located on the (-Xl'GllC-L' of said earpiece.

a. An earpiece of the class described ha: ing an interior sound chamhd, said sous:

'm'eanso"l protection being located on the exterior ot'said earpiece. p

An earpiece of the 'class described having an exterior convex line sound chamber and an interior convex line sound chamber, said interior sound chamber being united with said exterior sound chamber by a central bore, 'a concentric sound swell chamui'ng formation in remotest distant location around said bore adjoining said interior sound chamber or coacting directly therewith; and one or a few minute compression release vents for said swell chambering, and a protective hollow or groove for the vents located on the exterior of the earpiece to insure complete final exhaust.

'"7. An earpicceof the classdescribed having aninterior sound chamber, said sound chamber provided with a plurality of coacting sound swell chambers, one or a fev: of minute compression release vents connecting said swell chamber formatimi with the outer air by way of a protective groove or hollow forming a main exhaust.

S. A double earpiece of the. class slescribed comprising a main earpiece and an auxiliary earpiece, said auxiliary earpiece being in communication with the main earpiece by way of a swivcllel tubular conductor, said conductor communicating with the outer air through one of said earpicccs through an exteriorly located and n'otectez'l main exhaust.

9. For an earpiece of the class here described and claimed, a tubular swivel joint for connecting said earpiece co-operatively with an auxiliary earpiece, said swivel joint comprising an interior small tubular memher having a boss or outwardly burnished end for shonldering with one emi of :1 larger tubular member, said larger tubular memher having its ends formed or burnislu-zi inwardly to a close fit upon said smali tubular member, and a substantial clearance between the exterior of said small tubular member and the interior of said large tubular member between the formed or inwardly burnished over ends of said large tubular member.

10. A sound transmission cap or disc for a sound producing instrument of the class describedhaving a main bore and an in.- terior. sound chamber, a diaphragm sent within the same, a sound swell chamber adjoining said diaphragm seat, one or more constantly open vents of minute size for said'swell chamber, said vent or vents terminating into a rotective hollowor groove constituting a nal exhaust, said exhaust. located on the exterior of said disc.

11. A sound transmission dis:- embraced with an interior sound chamber and a main bore, a diaphragm seat within said in-' terior sound chamber, a concentrically arranged sound swell ehambering formation around said main bore for said interior sound.ehamber,.an exterior hollow or groove for-said disc, one or more minute vents joining said swell chambering formation with said exterior hollow or groove, said exterior hollow or groove constituting a protective final exhaust chamber.

12. .A sound transmission disc of the class described comprising an interior sound chamber and a main sound transmission bore, a diaphragm seat within said sound chamber, a concentrically arranged series of sound swell chambers adjoining said diaphragm-seat, a protective exterior groove or hollow for said disc, one or several of said swell chambers connecting with said exterior hollow or groove by one or more minute bores or vents, the outlets of said vents being protected by said exterior groove or hollow, said groove or hollow constituting a means of final and protective exhaust for said vents.

13. A sound transmission disc of the class described comprising an interior sound chamber, a central sound transmission bore for said sound chamber, a concentric in relation to said central bore sound swell chambering formation within said interior sound chamber, one or more vents of minute size, said vent or vents being in cooperative relation with said sound swell chambering formation and the outer air, said central sound transmission bore and said vent or vents being in substantial right angle relation with each other.

14. A sound transmission disc of the class described comprising an interior sound chamber, a central sound transmission bore directly communicative with the exterior for said interior sound chamber, a sound swell chambering formation within said interior sound chamber, a diaphragm seat within said interior sound chamber, said swell chambering formation being in close alinemcnt with said diaphragm seat and in concentric relation with said central sound transmission bore, a periphery to said disc, one or more vents of minute size aonnecting swell chambering formation with said irhery by direct passage between them.

15. A sound transmission disc of the.cl ass described comprising an interior sound chamber, a central sound transmission bore directly comnnmicative with the exterior for said interior sound chamber, a diaphragm seat within said interior sound chamber, a series of sound swell chambers concentric 10 said central sound transmission bore adjoining said diaphragm sea-t, one or more minute exhaust vents for one or more of said sound swell chambers, said exhaust vent or vents ente'in said swell vhamber or chambers from the outer periphery of said disc.

16. A sound transmission disc for a sound producing instrument of the class described having a main. bore and aninterior sound chamber, a diaphragm seatadjoin'ing said chamber, one or more constantly open 'passages of minute size in cooperative relation with said interior sound chamber and terminating into an exterior protective groove or hollow.

17. A sound transmission disc embraced with an interior sound chamber and a main bore, a diaphragm seat adjoining said interior sound chamber, an exterior hollow or groove for said disc, one or more wave passages of minute size in co-operative relation with said interior sound chamber and said exterior hollow'zor groove.

18. An earpiece of the class described having an interior sound chamber of convex formation, a diaphragm seat surrounding nae same, said interior sound chamber co-operatively related with a protective groove or hollow located on the exterior of said earpiece by way of a minute wave passage.

19. An earpiece of the class described having an interior sound chamber, a diaphragm seat surrounding said sound chamher, a protective cavity or hollow on the extc ior of said earpiece, said interior sound chamber and said cavity or hollow in eo-operative relation with each other by way of a minute sound passage.

.20. An earpiece of the class described having an interior sound chamber of convex inverted trumpet bell formation, said sound chamber being in co-operative relation with the exterior of said earpiece by way of one or more minute wave paths, and means of protection for said wave path or wave paths.

9.1. An earpiece of the class described having an exterior convex line sound chamher and an interior convex line sound chamber, said interior sound chamber being united with said exterior sound chamber by a central bore, a concentric sound swell chambering formation in rcmotest position around said central bore coacting with said interior sound chamber, one or more minute wave paths for said swell chambering formation, and a protective hollow or groove for said wave path or wave paths located on the exterior of said earpiece.

22. An earpiece of the class described hav- 5 ing an interior sound chamber and a diaphragm seat surrounding same, said sound rhavmber being provided with one or more coacting sound swell chambers, one or more minute ware paths or runs co-operatively connecting said swell chambering formation 10 with the outer air.

In testimony whereof I have signed my name to this application. I

HER-MAN G. PAPE. 

